In other words, by counting the number of microstates, one can naturally understand that the entropy is proportional to the volume in the kinematic space. It's interesting and instructive to look at this the other way around, as we can see, that a construction of microstates wherein the entropy is positively related to the volume (the characteristic of normal thermodynamic systems) actually can correspond to a construction wherein the entropy is positively related to the area (the characteristic of the holographic gravity system). Kinematic space is also closely related to the interpretation of the MERA tensor network [1]}, [2]}, therefore, we expect that our thread/state correspondence will deepen the understanding of both.
